The Environmental Protection Agency (EPA) said that surveys of retail stations since mid-October show that about 85 percent of highway diesel fuel meets ultra low sulfur diesel (ULSD) standards, exceeding the 80 percent regulatory mandate.
However, EPA pointed out that although almost all pumps contain ULSD, preliminary data indicates that some retail stations have not properly labeled their diesel pumps as such. One-hundred percent of highway diesel fuel must meet the ULSD standards by 2010. ULSD fuel has 97 percent less sulfur than diesel fuel produced in previous years.